What is √21 approximated the the nearest tenth? ?

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone